Switched my domain name

Hi,
I switched my website domain name to http://www.platypusdreaming.com.au
The currency plugin is showing the premium version is connected to kayaxan.com.au
can you update this? for future reference, is there anyway i can do this manually from my end?

Also, behind the flag the colour is white (not green like the rest of header)
Also, the default currency is constantly loading as USD then after 15+ seconds it is changing to AUD (I am in Australia).
Will this resolve once premium is activated? The converter should remember from where I am logging in from..

Thank you